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• 2. What causes a differentiating B cell to become committed to producing only one species of antibod
• 18. 關於下列分子敘述何者正確? (A) I 和 II 為 enantiomers (B) III 和 IV 為 enantiomers (C) II 和 III 為 same compound (
• 3. Which of the following about neuron is incorrect? (A) It is a polarized cell. (B) Peripheral nerv
• 4. In the life cycle of an angiosperm, which of the following cells or tissues are diploids? (A) gen
• 5. The black dots that cover strawberries are actually individual fruits from a flower with multiple
• 6. During splicing, which major molecular component of the spliceosome catalyzes the excision reacti
• 7. Which of the following statements regarding the body plans of animal is correct? (A) Cnidarian ar
• 8. In a phylogenetic tree, a group is composed of some species but not their most recent common ance
• 9. Bioluminescence is an important strategy for attracting preys in which of the following marine zo
• 10. Which of the following descriptions regarding sensory receptors is correct? (A) Sense of smell i
• 11. Which statement is incorrect concerning protein translation? (A) Ribosomes in prokaryotic and eu
• 12. Testosterone is synthesized primarily by the ________. (A) Leydig cells (B) hypothalamus (C) spe
• 13. Which of the following orders regarding mammalian embryogenesis is correct?1. cleavage2. gastrul
• 14. Which of the following descriptions regarding the embryonic germ layers is correct? (A) Pituitar
• 15. Which of the following about chloroplasts and mitochondria is incorrect? (A) They are of the app
• 16. ________ are commonly referred to, respectively, as the 21st and 22nd amino acids. (A) Selenocys
• 17. Which of the following sequences is not found in an E. coli vector (such as pET21)? (A) replicat
• 18. Which of the following metabolic pathways is strictly anabolic? (A) glycolysis (B) gluconeogenes
• 19. Dihydrouracil and pseudouridine are found predominantly in ________. (A) mRNA (B) rRNA (C) tRNA
• 20. Which oil listed below contains more than 60% unsaturated fatty acids? (A) beef (B) milk (C) coc
• 21. In order to perform PCR, the following reagents must be included ________. (A) DNA fragment, pri
• 22. The coding sequence of DNA is 5’-CGCTATAGCGTTT-3’. Which of the following sequences is its RNA t
• 23. Gout is caused by ___ over degradation results in accumulation of uric acid. (A) purine (B) pyri
• 24. Which of the following peptides has the largest molar extinction coefficient for UV absorption a
• 25. What main compound is transported from the cytosol to the mitochondria via malate-aspartate shut